diff --git a/test/test_docker_interactive.py b/test/test_docker_interactive.py
index 54da79e..0f01a6d 100644
--- a/test/test_docker_interactive.py
+++ b/test/test_docker_interactive.py
@@ -7,8 +7,8 @@
 
 IMAGE_NAME = os.environ['IMAGE_NAME']
 
-@pytest.fixture(scope='function')
-def ib_docker():
+@pytest.fixture(scope='session')
+def ib_docker(request):
     account = os.environ['IB_ACCOUNT']
     password = os.environ['IB_PASSWORD']
     trading_mode = os.environ['TRADING_MODE']
@@ -21,8 +21,12 @@ def ib_docker():
         '--env', 'TRADING_MODE={}'.format(trading_mode),
         '-p', '4002:4002',
         '-d', IMAGE_NAME]).decode().strip()
+    
+    # at the end of the test suite, destroy the container
+    def remove_container():
+        subprocess.check_call(['docker', 'rm', '-f', docker_id])
+    request.addfinalizer(remove_container)
     yield docker_id
-    subprocess.check_call(['docker', 'rm', '-f', docker_id])
 
 
 def test_ibgw_interactive(ib_docker):